Added arrow key navigation to Overview Mode

ash/wm/overview/window_selector_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
@@ skipping 1157 matching lines @@
 
   // Rotate the display, windows should be repositioned to be within the screen
   // bounds.
   UpdateDisplay("600x200/r");
   EXPECT_EQ("0,0 200x600", root_window->bounds().ToString());
   for (ScopedVector<aura::Window>::iterator iter = windows.begin();
        iter != windows.end(); ++iter) {
     EXPECT_TRUE(root_window->bounds().Contains(
         ToEnclosingRect(GetTransformedTargetBounds(*iter))));
   }
+
+// Tests selecting a window in OM with the arrow keys.
+TEST_F(WindowSelectorTest, ArrowKeyNavigation) {
+  gfx::Rect bounds1(0, 0, 100, 100);
+  gfx::Rect bounds2(450, 450, 550, 550);
+
+  scoped_ptr<aura::Window> window1(CreateWindow(bounds1));
+  scoped_ptr<aura::Window> window2(CreateWindow(bounds1));
+  wm::ActivateWindow(window1.get());
+
+
+
+  ToggleOverview();
+
 }
 
 }  // namespace ash